EP0549941B1 - Pièce d'horlogerie du type mécanique et/ou électromécanique, pourvue de moyens d'affichage à déplacement retrograde automatique - Google Patents

Pièce d'horlogerie du type mécanique et/ou électromécanique, pourvue de moyens d'affichage à déplacement retrograde automatique Download PDF

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Publication number
EP0549941B1
EP0549941B1 EP92121218A EP92121218A EP0549941B1 EP 0549941 B1 EP0549941 B1 EP 0549941B1 EP 92121218 A EP92121218 A EP 92121218A EP 92121218 A EP92121218 A EP 92121218A EP 0549941 B1 EP0549941 B1 EP 0549941B1
Authority
EP
European Patent Office
Prior art keywords
teeth
oscillating element
abutment
driving
timepiece according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92121218A
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German (de)
English (en)
French (fr)
Other versions
EP0549941A1 (fr
Inventor
Frank Vaucher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Longines Watch Co Francillon Ltd
Original Assignee
Compagnie des Montres Longines Francillon SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie des Montres Longines Francillon SA filed Critical Compagnie des Montres Longines Francillon SA
Publication of EP0549941A1 publication Critical patent/EP0549941A1/fr
Application granted granted Critical
Publication of EP0549941B1 publication Critical patent/EP0549941B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/08—Geometrical arrangement of the graduations
    • G04B19/082—Geometrical arrangement of the graduations varying from the normal closed scale
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/241—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars the date is indicated by one or more hands

Definitions

  • the present invention relates to a timepiece of the mechanical and / or electromechanical type.
  • a timepiece comprising display means with automatic retrograde movement, that is to say capable of returning in reverse towards a point of origin after having made a movement on a race, by circular example, predetermined.
  • Displays of this type are used to provide analog information, such as for example hours, minutes, seconds, date or the like.
  • These display means are also known in watchmaking under other names, such as sectoral or oscillating displays.
  • Patent CH-27961 discloses a timepiece comprising display means with retrograde movement which allow the hours and minutes to be read on arcs of a circle formed on a dial, by means of two hands returning to their point of origin after reaching divisions 12 and 60 respectively. This timepiece meets the definition given above.
  • This part comprises a first drive gear formed by a wheel which is driven by a fully mechanical horometric movement and which meshes with a toothed sector, itself engaged with a wheel secured to a barrel carrying a minute hand.
  • the hour hand is carried by another canon which is, as for him, directly arranged on a sector engaged with a second reference.
  • Each reference has in its thickness a clearance formed by a notch in the form of a tab. This notch opens radially at the periphery of the return, close to its teeth intended to mesh with the sector.
  • the sector has a stop, while the return comprises a counter-stop, this stop and this counter-stop being shaped to come into contact in order to limit the angular displacement of the sector and to precisely re-align the needle. corresponding to its original position relative to the dial.
  • the stop which is formed on the sector is constituted by a heel whose height is twice greater than that of the teeth and therefore that of the body of the sector.
  • the counter-stop is constituted by a deflection tooth which is located above the clearance, on a level higher than the meshing teeth of the sector.
  • the return must have a sufficient thickness to be able to receive the clearance formed therein and to leave a tooth forming against stop which is sufficiently rigid in shear to accept the dynamic force undergone by the contact of the stop. formed by the heel, at the end of the movement in the retrograde direction.
  • the heel itself must have a sufficient thickness or protrude sufficiently from the meshing teeth of the sector, to come to cooperate with the counter-stop.
  • this arrangement has the essential drawback of being relatively bulky in thickness.
  • This arrangement was designed to apply to a watch movement such as a pendulum or a clock, and this is the reason why the manufacturers of the time had not been concerned to reduce the 'thickness.
  • This arrangement cannot therefore be integrated into a modern mechanical and / or electromechanical timepiece in which, as we know, it is also necessary to provide space for other large volume components, such as the battery or additional mechanisms. date indication, or even chronograph.
  • a timepiece is known, a hand of which, in particular the hour hand, is also mounted integral with a toothed sector which is intended to cooperate with a reference in which a clearance similarly constituted by a miter notch directly machined in this reference.
  • the stop and the counter-stop are respectively constituted by a beam of considerable length and by an axis which are attached respectively to the toothed sector and to the gear. The axis is arranged tangent to the clearance.
  • the stop and the counter stop protrude axially from the sector and from the return and they occupy an important place in thickness.
  • the pin when the needle has finished its travel in the direction of driven movement, the pin is inside the clearance formed by the absence of teeth on the date wheel and the movement of this wheel as well as that of the 'needle are stopped, failing to catch with the return.
  • the date wheel meshes with a manual actuation wheel on which a bare sector is formed, the diameter of which is substantially identical to the head diameter of the teeth of the actuation wheel. The latter allows, thanks to its bare non-toothed part, to form a stop limiting the angular displacement of the date wheel.
  • this arrangement is not automatic and it requires the use of an additional actuating wheel which again increases the manufacturing costs.
  • this wheel does not provide sealing and exposes the movement to dust and impurities since it projects from the box to be externally accessible.
  • the reference must have a significant reduction since it must make one revolution for each step of the calendar hand, this because of the drive pin.
  • the present invention aims to overcome the drawbacks of the prior art mentioned above, by providing a timepiece provided with display means with fully automatic retrograde movement, of thickness as low as possible to reduce the overall height, in particular in order to be able to equip standard movements having a determined thickness.
  • the present invention also aims to provide a timepiece of this type whose manufacturing and assembly costs are as low as possible.
  • the clearance which constitutes the declutching means is defined in length essentially by two driving teeth, called end teeth, one of these end teeth forming said counter-stop.
  • the driving tooth forming the counter-stop has at least in plan an identical shape, and a thickness equal to that of the other driving engagement teeth.
  • the stop substantially protrudes from the teeth of the oscillating element, depending on their height, to cooperate with the driving engaging tooth forming the counter-stop.
  • the display means 1 which equip a timepiece referenced P are intended to provide information in analog form, such as the date and in particular the dates.
  • the timepiece P is, in this example, constituted by a wristwatch of the mechanical and / or electromechanical type comprising a strap 2 which is here partially shown and which is mounted on a case 4.
  • the timepiece P comprises a dial 6 on which are written in particular indications of hours and minutes, identified respectively by a first group of numbers 1 to 4 and 8 to 12 and by a graduated circular scale, not referenced.
  • a dial 6 Next to the dial 6 are arranged three hands, respectively of hours 8, minutes 10 and seconds 12 which are driven by a horometric movement, not shown, conventionally mounted in the case 4 and which can be actuated manually by a crown 14. Needles 8, 10 and 12 can move in rotation coaxially around a first axis of rotation X1, centered on the movement of the part P.
  • the sectoral or retrograde displacement display means 1 comprise, in a visible manner in this figure, an information display system 16 which is constituted by a needle 18 shaped to move angularly opposite a annular sector 20 inside which data is written, and in particular in this example a second group of figures of the odd type, 1 to 31, indicating the date of the month.
  • the hand 18, which is kinematically linked to the horometric movement of the timepiece P, is in its original position on the first day of the month, opposite the indication 1 and it jumps a step every day, especially around midnight, thanks to the means in their major conventional part that we will not describe in detail here.
  • the date hand 18 continues its advance until it comes opposite the number 31 where it reaches its position of final angular displacement.
  • the needle 18 automatically moves in the opposite direction to its original position. This needle 18 therefore performs a so-called retrograde movement. This movement being effected only on a fraction of a turn, and in particular in this example over an angle of approximately 330 °, it is understandable why the display means 1 according to the invention are also qualified as sectoral display means.
  • dial 6 and a support plate 50 have been shown partially and torn off. Also found in these figures the needle 18 which is shown here in broken dashed lines.
  • the display means 1 comprise a reference or driving pinion 22 which is mounted for rotation about the central axis X1 and which is integral with a driving star 24 comprising in this example 31 teeth.
  • This star is driven in a conventional manner by the horometric movement not shown and it is associated with a jumper spring also conventional, likewise not shown.
  • the reference 22 includes meshing teeth 26a, 26b up to 26y, in this example 25 in number, these teeth being identified by the general reference 26a-26y (26a to 26y).
  • the sectoral or retrograde display means 1 additionally comprise an oscillating element 30 which is associated with the display system 16 via an axis, not referenced, on which the needle 18 is conventionally driven out.
  • the oscillating element 30 is constituted by a wheel, and in particular by a date wheel (same reference) which is rotatably mounted around a second axis of rotation X2 offset from the first X1 and which comprises meshing teeth identified by the general reference 32.
  • the meshing teeth 26a-26y of the reference 22 are able to come into engagement with the meshing teeth 32 of the oscillating element 30 in order to drive it in rotation over a fraction. angle corresponding to the arc of the annular display sector 20.
  • the engine torque being received from the movement of the timepiece P via the gear 22, it is understood that the meshing teeth 26a-26y of the gear 22 and the meshing teeth 32 of the oscillating element 30 are respectively driving and driven.
  • the display means 1 comprise means 34 for elastic return of the oscillating element 30, these means 34 being constituted by a spiral spring (same reference), one end of which is integral with the oscillating element 30 by being fixed for example on its support axis not referenced, while the other end is held fixed relative to the box, by being fixed directly for example on the support plate 50 shown in more detail in FIGS. 5 to 8.
  • the return means 34 are arranged so that the oscillating element 30 is returned elastically to its original position, shown in Figure 2, that is to say in its retrograde direction of movement (counterclockwise in this example).
  • the display means 1 further comprise declutching means 40 shaped to at least temporarily interrupt the engagement between the driving teeth 26a-26y and the driven teeth 32 and, as will be understood, to allow the element oscillating 30 to freely carry out its retrograde movement.
  • the declutching means 40 are constituted by a clearance (same reference) formed in the driving teeth 26a-26y. This clearance 40 therefore corresponds to a toothless zone, forming a bare or smooth annular sector, on the reference 22.
  • the teeth 32 of the oscillating element 30 are no longer in normal engagement with those, 26a-26y, of the reference 22.
  • the oscillating element 30 is released from its kinematic connection with the reference 22, and therefore with the horometric movement of the timepiece P according to the invention.
  • the oscillating element 30 is permanently resiliently returned by the spring 34 to its original position in the direction of counterclockwise movement and its angular displacement in this direction is limited to this original position by a stop. B and by a counter stop CB display means 1 according to the invention.
  • the stop B is secured to the oscillating element 30, while the counter stop CB which is formed by one (referenced 26a) of the engagement teeth 26a-26y, is secured to the reference 22.
  • the counter-stop CB by being constituted by one, 26a, of the driving meshing teeth 26a-26y of the return 22 normally engaging, during the drive, with the driven teeth 32 of the oscillating element 30, does not require any additional machining or assembly operations, in particular on the return 22.
  • the clearance 40 which constitutes the declutching means has an arc length, not referenced, defined essentially by two of the driving teeth respectively 26a and 26y, called extreme teeth, one, 26a, of these extreme teeth forming in particular said counter CB stop.
  • the driving tooth 26a forming the counter-stop CB has at least in plan a shape identical to that of the other driving engaging teeth 26b to 26y. More particularly, it will be specified that this tooth 26a has a thickness equal to that of the other driving meshing teeth 26b to 26y.
  • the stop B in turn, substantially protrudes from the driven teeth 32 of the oscillating element 30, according to their height h ( Figure 2) to come to cooperate with the tooth 26a forming the counter-stop CB.
  • the stop B is formed essentially in the thickness of the oscillating element 30.
  • the stop B has a thickness E1 equal to that, E2, of the teeth 32.
  • FIG. 4 represents a second embodiment of the invention, in which the reference 22 comprises two groups G1 and G2 of driving teeth, these groups being separated by an equal number of clearances, respectively 40 and 40a.
  • the angular travel of the needle 18 is therefore here much more limited, and this needle performs two round trips for a complete rotation of the return 22.
  • the number of clearances as well as the number of distinct groups of driving teeth are not limited to two and can be extended to larger numbers respectively.
  • the stop B as well as the engaged meshing teeth 32 of the wheel forming the oscillating element 30 are inscribed in the thickness E2 of the board P forming said wheel.
  • the stop B can therefore be provided by the same machining and stamping operations as those necessary for the production of the teeth 32, without additional operation.
  • the stopper B has a profile having a reentrant lateral flank FL (FIG. 3) able to cooperate with the driving tooth 26a forming the counter-stopper B.
  • the oscillating element 30 is again driven in rotation in its clockwise direction by the action of the tooth 26a on the reentrant lateral flank FL.
  • the stop B is constituted by a sector S projecting from the top of two half teeth of the driven teeth 32 of the oscillating element 30.
  • the stopper B is produced simultaneously with the manufacture of the engaging meshing teeth 32 of the oscillating element 30.
  • the wheel forming this oscillating element 30 is cut to an outside diameter greater than the head diameter of the teeth 32. This supplement diameter corresponds to twice the height H ( Figure 3) of the stop B.
  • the teeth 32 are formed in the board P using a conventional size cutter, not shown, but only on a given angular part to allow to remain and reveal, in the wheel 30, the stop B.
  • the invention further comprises a support plate 50, shown in more detail in FIGS. 5 to 8, on which the oscillating element 30 is pivotally mounted.
  • This support plate 50 is intended to be mounted and fixed, by its lower face FI (FIGS. 6 and 7), on a plate of the horometric movement not shown of the timepiece P according to the invention.
  • This plate 50 has two recesses 52 and 54 opening radially into one another.
  • the first recess 52 receives the reference 22, while the second, 54, receives the oscillating element 30.
  • the second recess 54 has a tongue or projection 56 on the free end of which the oscillating element 30 is supported cantilevered and rotatable.
  • the tongue 56 projects diametrically in the second recess 54 toward its center intended to come into coincidence with the second axis of rotation X2.
  • the plate 50 has a third recess 59 formed on the side of the face FI and into which the other two recesses 52 and 54 open axially.
  • the invention also comprises a second plate 60 fixed to the first, 50.
  • This second plate 60 is fixed, by means of screw-tapping systems 62 above the oscillating element 30, in a fourth recess 58 formed in the first plate 50, above the second obviously 54 and so coaxial with it.
  • the second plate 60 has a through circular groove 64 into which a tool, not shown, can be inserted, intended to arm the oscillating element 30 by putting under tension its return means 34.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Electromechanical Clocks (AREA)
EP92121218A 1991-12-28 1992-12-12 Pièce d'horlogerie du type mécanique et/ou électromécanique, pourvue de moyens d'affichage à déplacement retrograde automatique Expired - Lifetime EP0549941B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3859/91A CH681761B5 (fr) 1991-12-28 1991-12-28 Pièce d'horlogerie du type mécanique et/ou électromécanique, pourvue de moyens d'affichage à déplacement retrograde automatique.
CH3859/91 1991-12-28

Publications (2)

Publication Number Publication Date
EP0549941A1 EP0549941A1 (fr) 1993-07-07
EP0549941B1 true EP0549941B1 (fr) 1995-08-09

Family

ID=4265005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121218A Expired - Lifetime EP0549941B1 (fr) 1991-12-28 1992-12-12 Pièce d'horlogerie du type mécanique et/ou électromécanique, pourvue de moyens d'affichage à déplacement retrograde automatique

Country Status (9)

Country Link
US (1) US5235562A (zh)
EP (1) EP0549941B1 (zh)
JP (1) JP3256908B2 (zh)
KR (1) KR100248161B1 (zh)
CN (1) CN1041245C (zh)
CH (1) CH681761B5 (zh)
DE (1) DE69204043T2 (zh)
HK (1) HK1007009A1 (zh)
TW (1) TW203652B (zh)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0558756B1 (en) * 1991-09-13 1997-01-22 Citizen Watch Co. Ltd. Multi-time indicating analog watch
CH684815B5 (fr) * 1993-07-15 1995-07-14 Longines Montres Comp D Mécanisme de quantième annuel pour pièce d'horlogerie.
JP3489892B2 (ja) * 1994-12-27 2004-01-26 シチズン時計株式会社 電子時計
CH690047A5 (fr) * 1996-02-01 2000-03-31 Gerald Genta Sa Pièce d'horlogerie à affichage rétrograde des minutes, notamment montre-bracelet.
CH690515A5 (fr) * 1996-03-27 2000-09-29 Patek Philippe Sa Pièce d'horlogerie munie d'un affichage du quantième.
CA2313427C (en) 2000-07-28 2002-06-11 A. Daniel Brophy Personal organization tool
EP1372047A1 (fr) * 2002-06-13 2003-12-17 Desco von Schulthess AG Pièce d'horlogerie à affichage rétrograde
CH696860A5 (fr) * 2003-03-27 2007-12-31 Franck Muller Watchland S A Mécanisme d'affichage rétrogradant.
JP3714355B2 (ja) * 2003-05-29 2005-11-09 セイコーエプソン株式会社 計時装置およびその自動停止方法
CH706126B1 (fr) * 2008-03-25 2013-08-30 Maurice Lacroix Sa Pièce d'horlogerie comportant un mécanisme d'affichage rétrograde.
DE102013109288B3 (de) * 2013-08-27 2014-05-22 Lange Uhren Gmbh Uhr
JP1522008S (zh) * 2014-03-13 2015-04-20
USD856823S1 (en) * 2014-11-11 2019-08-20 Kun-Chi Wu Wrist watch
CN106292242B (zh) * 2015-06-11 2017-12-22 天津海鸥表业集团有限公司 一种手表时分针行星显示传动机构
CH712219A2 (fr) * 2016-03-15 2017-09-15 Chanel Sa Genève Mécanisme pour mouvement de montre à affichage rétrograde et sautant.
EP3330809B1 (fr) * 2016-12-01 2019-10-16 Omega SA Montre comportant un dispositif d'affichage de quantième
JP7076194B2 (ja) * 2017-02-17 2022-05-27 セイコーインスツル株式会社 機構モジュール、ムーブメントおよび時計
JP2019148534A (ja) * 2018-02-28 2019-09-05 セイコーエプソン株式会社 時計
USD957268S1 (en) * 2020-01-09 2022-07-12 Montres Breguet Sa (Montres Breguet Ag) (Montres B Watch case

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH27961A (fr) * 1903-04-09 1904-03-15 Giovanni Sgherlino Pièce d'horlogerie
CH27838A (fr) * 1903-05-05 1904-02-29 Lopez Mantaras Gabriel Montre
US1846962A (en) * 1926-09-16 1932-02-23 Charles J Reitz Clock-controlled calendar
US3842590A (en) * 1973-06-28 1974-10-22 Citizen Watch Co Ltd Calendar timepiece
JPS5137264A (zh) * 1974-09-25 1976-03-29 Citizen Watch Co Ltd
CH651440GA3 (en) * 1982-10-01 1985-09-30 Fab D'ebauches De Sonceboz Sa Semi-instantaneous calendar indication mechanism for a watch, especially a wristwatch
JP2990842B2 (ja) * 1991-04-30 1999-12-13 セイコーエプソン株式会社 時計の日付表示構造及び日付曜日表示構造

Also Published As

Publication number Publication date
TW203652B (zh) 1993-04-11
CN1073778A (zh) 1993-06-30
JPH05297153A (ja) 1993-11-12
HK1007009A1 (en) 1999-03-26
DE69204043D1 (de) 1995-09-14
CH681761B5 (fr) 1993-11-30
CN1041245C (zh) 1998-12-16
EP0549941A1 (fr) 1993-07-07
US5235562A (en) 1993-08-10
KR100248161B1 (ko) 2000-04-01
JP3256908B2 (ja) 2002-02-18
KR930013894A (ko) 1993-07-22
CH681761GA3 (zh) 1993-05-28
DE69204043T2 (de) 1996-04-25

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